This week's episode of Science Weekly, our regular science adn technology podcast, covers all the bases you could wish for. Not only do we hear from disaster expert Bill McGuire - who explains why supervolcanoes, asteroids and earthquakes aren't necessarily going to kill us all - but we've also got an interview with the elusive Robert Cailliau.

Robert may not be as well known as the man he shared an office with in Switzerland, Sir Tim Berners-Lee, but he was a co-developer of the web and instrumental in its early days. Guardian science correspondent James Randerson grabbed him for a chat.

Elsewhere in this week's show we discuss cloned meat, Brian May and chase bats under the Houses of Parliament. Click here to listen now, or subscribe to the web feed.